论文标题
在太阳冠状平板上冲动产生的纠结波列
Impulsively Generated Kink Wave Trains in Solar Coronal Slabs
论文作者
论文摘要
我们通过在理想的磁氢动力学（MHD）的框架中工作来遵循数值遵循密度增强的平板对冲动，局部，横向速度扰动的响应。线性和非线性制度均已解决。发现扭结序列沿检查的平板发育，具有随时间出现更多振荡模式的特征，并且明显的波长随着给定的瞬间随距离而增加。但是，由于非线性而产生了两个特征，一个特征是靠近兴奋剂的密度腔，另一个是名义平板外部和内部冲击的外观。这些特征可能与理解磁性结构与诸如冠状动脉质量弹出等爆炸事件之间的相互作用有关。我们在典型的彩带波测量时讨论了我们在太阳冠状平板中的扭结波列的数值发现。
We numerically follow the response of density-enhanced slabs to impulsive, localized, transverse velocity perturbations by working in the framework of ideal magnetohydrodynamics (MHD). Both linear and nonlinear regimes are addressed. Kink wave trains are seen to develop along the examined slabs, sharing the characteristics that more oscillatory patterns emerge with time and that the apparent wavelength increases with distance at a given instant. Two features nonetheless arise due to nonlinearity, one being a density cavity close to the exciter and the other being the appearance of shocks both outside and inside the nominal slab. These features may be relevant for understanding the interaction between magnetic structures and such explosive events as coronal mass ejections. Our numerical findings on kink wave trains in solar coronal slabs are discussed in connection with typical measurements of streamer waves.
